Dendrobium infundibulum

Dendrobium infundibulum is found across northern Indochina (Laos, Thailand, Vietnam, and Myanmar), southern China (Yunnan), Assam in India, and parts of Bangladesh. It is a medium- to large-sized epiphyte—occasionally lithophytic—that thrives in deciduous and semi-deciduous forests at elevations of 200–2,300 meters.

Features:

• Stems & Leaves: Features erect, cylindrical pseudobulbs (canes), growing 30–100 cm long, each with up to 10 dark green lanceolate leaves; stems are sheathed in fine black hairs.

• Flowers: Blooms appear primarily in spring and summer (though some may flower year-round). Each mature cane produces 2 large white flowers (8–10 cm across) on short racemes near the cane apex. The lip is funnel-shaped with yellow or orange markings.

• Pollination: Some populations mimic rhododendron flowers to attract bees without offering nectar—an intriguing example of floral deception.

Care Tips:

Light & Placement

• Prefers bright, indirect light; avoid harsh direct sunlight. Intensities suitable for Phalaenopsis orchids are ideal.

• In homes, an east- or west-facing window is ideal; mitigate strong southern sun with filter or shade.

Temperature & Humidity

• Thrives across a wide temperature range—from cool to warm—depending on growing conditions. Ensure nighttime temperatures dip slightly to promote blooming.

• Humidity: Consistent and high humidity is preferred (typical range: 58–83%). Keep roots moist without staying soggy; enhance humidity through hydration trays or misting.

Watering & Rest Period

• Active Season (spring–summer): Water regularly—twice weekly is common—but allow slight drying between waterings.

• Dormant Season (winter): Provide a dry rest, significantly reducing water and fertilizer. Resume feeding and watering gradually in spring.

Potting & Mounting

• Best grown mounted (e.g., cork, tree fern) to accommodate its epiphytic nature. When potted, use a bark-based mix providing excellent drainage.

• Avoid overpotting; roots prefer slight restriction.

Common Pests & Maintenance

• May attract scale, mealybugs, aphids, or spider mites—inspect regularly and treat promptly.

• Division: Mature plants can produce keikis on older canes—separate and propagate when roots reach ~2 cm.